CN214255021U - Crimping tool with replaceable pump body - Google Patents

Abstract

The utility model belongs to the technical field of crimping tools, in particular to a crimping tool with a replaceable pump body, which comprises a machine body, wherein a detachable pump body is arranged in the machine body, the front end of the pump body is connected with a cylinder piston component, the front end of the cylinder piston component is provided with a working part, the rear end of the pump body is provided with an oil bag, the cylinder piston component comprises an oil cylinder cover detachably connected with the machine body, and the end surface of the oil cylinder cover is provided with a detachable pump body. Convenient maintenance and reduced use cost.

Description

Crimping tool with replaceable pump body

Technical Field

The utility model relates to a crimping tool technical field refers in particular to a crimping tool of removable pump body.

Background

The crimping tool is a professional hydraulic tool which is specially used for crimping cables and connecting terminals or crimping pipelines in electric power engineering.

Like chinese utility model patent No. CN201921714047.9, the disclosed big or small piston dual-chamber formula crimping tool, including the pump body, the front end of the pump body is provided with the binding clip, the binding clip passes through the piston gasket and installs on the pump body to form an inclosed piston chamber, be provided with the V-arrangement moulding-die in the binding clip. The rear end of the pump body is provided with an oil bag with an oil plug and a fixed handle wrapping the oil bag, and the oil bag is filled with hydraulic oil. The oil pump is characterized in that an oil inlet channel and a pressure relief channel which are communicated with the piston cavity and the oil bag are respectively arranged on the pump body, and an oil inlet check valve and a filter screen are arranged at the oil inlet end of the oil inlet channel.

When the crimping tool is used, the plunger pump is easy to wear and damage, and a pump body in the crimping tool cannot be detached, so that the whole tool can be replaced only after the crimping tool is damaged, and the cost is too high.

Disclosure of Invention

The utility model aims at providing a crimping tool of the removable pump body can dismantle with the oil cylinder lid through the pump body and be connected, solves the problem that the pump body can't be changed.

The purpose of the utility model is realized like this: the utility model provides a crimping tool of removable pump body, includes the organism, is provided with the detachable pump body in the organism, and the front end of the pump body is connected with oil cylinder piston assembly, and oil cylinder piston assembly's front end is provided with the working part, the rear end of the pump body is provided with the oil bag, oil cylinder piston assembly includes can dismantle the oil cylinder lid of being connected with the organism, and the detachable pump body is installed to oil cylinder lid's terminal surface.

Preferably, the pump body is provided with a through hole, the cylinder cover is provided with a connecting hole, and the fastener II penetrates through the through hole and the connecting hole to fixedly connect the pump body with the cylinder cover.

Preferably, an installation groove I is formed in the oil cylinder cover, and a sealing ring I is arranged in the installation groove I.

Preferably, the cylinder cover is provided with a plurality of first fastening holes, the engine body is provided with a second fastening holes with the same number, and the first fastening piece penetrates through the first fastening holes and the second fastening holes to enable the cylinder cover to be fixedly connected with the engine body.

Preferably, one end of the machine body is provided with a connecting end face, a second mounting groove is formed in the connecting end face, and a second sealing ring is arranged in the second mounting groove.

Preferably, install the handle on the organism, be provided with starting switch on the handle, set up the pressure release passageway in the pump body, be provided with the pressure release piston that is used for controlling the break-make of liquid in the pressure release passageway, the top of pressure release piston is provided with the pressure release pole that is used for controlling its removal, and the pressure release pole is located one side of handle, the one end and the oil outlet channel of pressure release passageway are linked together, be provided with the pressure release check valve in the pressure release passageway, the upper end of pressure release check valve is provided with the pressure release piston that is used for controlling the pressure release check valve and opens and close, and the lower extreme butt of pressure release piston has spring one, and the upper end of pressure release piston is provided with the pressure release pole, the pressure release hole has been seted up to the other end of pressure release passageway, and the pressure release hole is connected with the oil bag.

Preferably, the periphery cover of pressure release piston is equipped with the pressure release rod cover, and the shaping has the pressure release chamber in the pressure release rod cover, has seted up the pressure release hole on the pressure release chamber, the pressure release check valve includes pressure release steel ball and pressure release spring, and the pressure release steel ball butt is used for blockking up the pressure release chamber between pressure release spring and pressure release rod cover, and the lower extreme of pressure release piston can stretch out the pressure release rod cover and be used for promoting the pressure release steel ball.

Preferably, the upper end of the pressure relief rod sleeve extends out of the machine body and is formed with a hinged portion, the hinged portion is internally hinged with the pressure relief rod, the pressure relief rod is located on the upper end face of the pressure relief piston and is L-shaped, a limiting shaft used for limiting the rotation of the pressure relief rod is arranged in the hinged portion, and the pressure relief rod is rotated to enable the pressure relief piston to move.

Preferably, an oil inlet channel and an oil outlet channel are formed in the pump body, an oil inlet check valve is arranged at one end of the oil inlet channel, an oil outlet check valve is arranged at one end of the oil outlet channel, an oil inlet and outlet cavity is formed between the oil inlet channel and the oil outlet channel, a shaft plug is movably arranged in the oil inlet and outlet cavity, and one end of the shaft plug is connected with a power source for driving the shaft plug to move.

Preferably, the oil cylinder piston assembly comprises an oil cylinder cover connected with the pump body, a pressure relief channel is formed in the oil cylinder cover, one end of the oil cylinder cover is connected with an oil cylinder body, a hydraulic cavity is formed in the oil cylinder body, a piston is movably arranged in the hydraulic cavity, a hydraulic channel communicated with the oil outlet channel is formed in the oil cylinder cover, one end of the hydraulic channel is communicated with the pressure relief channel, and one end of the hydraulic channel is connected with the hydraulic cavity; a second spring is abutted between one end of the piston and the end face of the oil cylinder body, the piston is connected with a working component through a third fastener, the working component comprises a lower die base piston rod, a binding clip is arranged on the periphery of the oil cylinder body, and a machining station is formed between the binding clip and the lower die base piston rod; the tong head is provided with a guide key, and the lower end surface of the piston rod of the lower die holder is provided with a guide groove for the guide key to slide; the power source comprises a motor, the output end of the motor is connected with a speed reducer, the output end of the speed reducer is provided with a transmission shaft, the periphery of the transmission shaft is provided with an eccentric block, the upper end of a shaft plug extends out of the pump body and is formed with a driving part, the eccentric block is positioned on the upper end face of the driving part, a third spring is abutted between the driving part and the pump body, and the transmission shaft drives the eccentric block to rotate so as to drive the shaft plug to reciprocate; a rotating bearing is arranged between the two ends of the transmission shaft and the machine body, and a rolling bearing is sleeved on the periphery of the eccentric block; the oil cylinder cover is internally provided with an overflow channel, one end of the overflow channel is connected with an overflow cavity, the other end of the overflow channel is connected with a hydraulic cavity, a safety valve assembly capable of adjusting the pressure is arranged in the overflow cavity, an overflow hole is formed in the overflow cavity, and the overflow hole is communicated with the oil bag.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model discloses a can dismantle the design of the pump body, because the piston is reciprocal to be removed in the pump body, consequently use the damage back when the pump body for a long time, can change it, easy maintenance reduces use cost.

2. The utility model provides an organism passes through the fastener with the oil cylinder lid and realizes dismantling the connection, consequently pulls down the back with the fastener, just can take out the oil cylinder lid subassembly from the internal, then the pump body wherein passes through the fastener and realizes dismantling with the oil cylinder lid and be connected, pulls down the back with this fastener again, can change the pump body, dismouting simple structure, easy dismounting.

3. The utility model discloses a design of handle when needs use crimping tool to carry out the crimping operation, through the handheld handle of one hand, remove crimping tool, press starting switch and can carry out work, then the thumb that uses this hand presses the pressure release pole and can accomplish pressure release work, and the electric wire can be handed to one other hand, so that the electric wire can be taken to centre gripping crimping work other hand, but the work of crimping and pressure release can be accomplished to one hand to this design, and convenient operation can realize one-man operation.

4. The utility model discloses a design of pressure release pole, through operating the pressure release pole, can drive the pressure release pole and remove to make the pressure release piston remove, finally make the pressure release passageway switch on, accomplish the pressure release operation, the pressure release pole is located one side of handle, very convenient operation, only need the one hand to hold the handle usually, then use the thumb of this hand press the pressure release pole can, but the work of crimping and pressure release is accomplished to the one hand, and the electric wire can be handed to another one hand, so that centre gripping crimping work.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the body.

Fig. 3 is a schematic perspective view of the cylinder piston assembly and the working member.

Fig. 4 is a schematic top view of the present invention.

Fig. 5 is a schematic sectional view of the structure at a-a in fig. 4.

Fig. 6 is a schematic structural view of the front half part in fig. 5.

Fig. 7 is a schematic structural view of the second half of fig. 5.

Fig. 8 is a schematic structural view of the cylinder head at B-B in fig. 4.

Fig. 9 is a schematic structural diagram of the machine body.

Fig. 10 is a schematic structural view of a pump body and an oil cylinder cover.

Reference numerals: 1-body; 2-a handle; 3-starting a switch; 4-a pump body; 5-a pressure relief channel;

7-a pressure relief bar; 8-pressure relief check valve; 8 a-pressure relief steel ball; 8 b-a pressure relief spring; 9-pressure relief piston;

10, a first spring; 11-pressure relief holes; 12-oil bag; 13-pressure relief rod sleeve; 16-a hinge; 17-a limiting shaft; 18-an oil inlet channel; 19-an oil outlet channel; 20-an oil inlet check valve; 21-oil outlet one-way valve; 22-oil inlet and outlet cavities; 23-shaft plug; 25-cylinder piston assembly; 26-a working part; 27-cylinder head; 28-oil cylinder body;

29-hydraulic chamber; 30-a piston; 31-a hydraulic channel; 32-spring two; 33-fastener three;

34-a lower die holder piston rod; 35-a binding clip; 36-processing station; 37-a guide key; 38-a guide groove; 39-motor; 40-a reducer; 41-a transmission shaft; 42-eccentric mass; 43-a drive section; 44-spring three; 45-a rotational bearing; 46-rolling bearings; 47-an overflow channel; 48-an overflow chamber; 49-a safety valve assembly; 50-overflow holes; 51-steel balls; 52-spring four; 53-adjusting the nut; 54-a pressure relief cavity; 55-through holes; 56-connecting hole; 57-fastener two; 58-mounting groove I; 59-sealing ring one; 60-fastening hole I; a second 61-fastening hole; 62-fastener one; 63-connecting the end faces; 64-mounting groove two; 65-sealing ring two.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1, a crimping tool of removable pump body, including organism 1, combine fig. 5, be provided with the detachable pump body 4 in the organism 1, the front end of the pump body 4 is connected with cylinder piston assembly 25, and the front end of cylinder piston assembly 25 is provided with workpiece 26, the rear end of the pump body 4 is provided with oil bag 12, combines fig. 10, cylinder piston assembly 25 includes and can dismantle the oil cylinder lid 27 of being connected with organism 1, and detachable pump body 4 is installed to the terminal surface of oil cylinder lid 27, and pump body 4 passes through the fastener and realizes dismantling with oil cylinder lid 27 and be connected, the utility model discloses a design of pump body 4 detachable because the piston is reciprocal to remove in the pump body, consequently can change it after the pump body uses the damage for a long time, easy maintenance reduces use cost.

Referring to fig. 10 specifically, a through hole 55 is formed in the pump body 4, a connecting hole 56 is formed in the cylinder head 27, one end of a second fastening piece 57 penetrates through the through hole 55 and is screwed into the connecting hole 56, so that the pump body 4 is fixedly connected with the cylinder head 27, and the pump body 4 can be detached and replaced after the second fastening piece 57 is screwed out.

Referring to fig. 10 specifically, a first mounting groove 58 is formed in the cylinder head 27, a first sealing ring 59 is arranged in the first mounting groove 58, and the first sealing ring 59 is used for enhancing the sealing performance between the pump body 4 and the cylinder head 27 and preventing leakage.

With reference to fig. 9 and 10, the cylinder head 27 is provided with a plurality of first fastening holes 60, the engine body 1 is provided with a second fastening holes 61 with the same number, the first fastening members 62 penetrate through the first fastening holes 60 and the second fastening holes 61 to fixedly connect the cylinder head 27 and the engine body 1, and after the first fastening members 62 are screwed out, the engine body 1 and the cylinder head 27 can be detached from each other.

Specifically referring to fig. 9, a connection end surface 63 is arranged at one end of the engine body 1, a second mounting groove 64 is formed in the connection end surface 63, a second sealing ring 65 is arranged in the second mounting groove 64, and the second sealing ring 65 is used for improving the sealing performance between the engine body 1 and the oil cylinder cover 27 and preventing leakage.

As shown in figure 1, install handle 2 on the organism 1, be provided with starting switch 3 on handle 2, when needs use crimping tool to carry out crimping operation, through the handheld handle 2 of one hand, remove crimping tool, press starting switch 3 and can carry out work, the electric wire can be taken to another hand, convenient operation can realize one-man operation.

Combine fig. 5, be provided with the pump body 4 in the organism 1, pressure release channel 5 has been seted up in the pump body 4, be provided with the pressure release piston 9 that is used for controlling the break-make of liquid in the pressure release channel 5, pressure release piston 9's top is provided with the pressure release pole 7 that is used for controlling its removal, through operating pressure release pole 7, can drive pressure release pole 7 and remove, thereby make pressure release piston 9 remove, finally make pressure release channel 6 switch on, accomplish the pressure release operation, pressure release pole 7 is located one side of handle 2, very convenient operation, only need generally one hand to hold handle 2, then use the thumb of this hand to press pressure release pole 7 can, the work of crimping and pressure release can be accomplished to one hand, and the electric wire can be handed to another hand, so that the work of centre gripping crimping.

Combine fig. 6 and fig. 7, the one end of pressure release channel 5 is linked together with play oil channel 19, and consequently the pressure in both passageways is the same, be provided with pressure release check valve 8 in the pressure release channel 5, under the normal conditions, pressure release check valve 8 is closed state, and the upper end of pressure release check valve 8 is provided with the pressure release piston 9 that is used for controlling pressure release check valve 8 to open and close, and the lower extreme butt of pressure release piston 9 has spring 10, and pressure release piston 9's upper end is provided with pressure release pole 7 rotates behind the pressure release pole 7, will promote pressure release piston 9 and move down, and spring 10 is compressed this moment, and pressure release check valve 8 makes it switch on, carries out the pressure release, pressure release hole 11 has been seted up to pressure release channel 5's the other end, and pressure release hole 11 is connected with oil bag 12, and fluid after the pressure release flows back to in oil bag 12.

Specifically, referring to fig. 7, a pressure relief rod sleeve 13 is sleeved on the periphery of the pressure relief piston 9, a pressure relief cavity 54 is formed in the pressure relief rod sleeve 13, a pressure relief hole 11 is formed in the pressure relief cavity 54, and after the pressure relief check valve 8 is switched on, hydraulic oil firstly enters the pressure relief cavity 54 and then flows back to the oil bag 12 through the pressure relief hole 11.

Specifically, see fig. 7, for the specific structure of pressure release check valve 8, pressure release check valve 8 includes pressure release steel ball 8a and pressure release spring 8b, pressure release spring 8b butt is between the lower terminal surface of pressure release steel ball 8a and the up end of pressure release chamber 54, because pressure release spring 8 b's elasticity, and the pressure of fluid in pressure release channel 5, under the normal conditions, make pressure release steel ball 8a butt on the through-hole of terminal surface under the pressure release rod cover 13 and be used for blockking up pressure release chamber 54 all the time, at this moment, pressure release channel 5 and pressure release chamber 54 do not switch on, and the lower extreme of pressure release piston 9 can stretch out pressure release rod cover 13 and be used for promoting pressure release steel ball 8a, consequently, through manual application of force, can let pressure release steel ball 8a leave stifled consent, make pressure release channel 5 and pressure release chamber 54 switch on.

Referring to fig. 2 and 7, a specific structure of the pressure relief rod 7 is described in detail, the upper end of the pressure relief rod sleeve 13 extends out of the machine body 1 and is formed with a hinge portion 16, one end of the pressure relief rod 7 is hinged in the hinge portion 16, the other end of the pressure relief rod 7 is located on the upper end face of the pressure relief piston 9, the pressure relief rod 7 is L-shaped, a limiting shaft 17 used for limiting rotation of the pressure relief rod 7 is arranged in the hinge portion 16, the pressure relief piston 9 can be moved by rotating the pressure relief rod 7 to one side close to the handle 2, force application is facilitated, and operation is convenient.

With reference to fig. 5 and 7, a specific structure of the pump body 4 is further described next, an oil inlet channel 18 and an oil outlet channel 19 are formed in the pump body 4, an oil inlet check valve 20 is arranged at one end of the oil inlet channel 18, an oil outlet check valve 21 is arranged at one end of the oil outlet channel 19, an oil inlet and outlet cavity 22 is formed between the oil inlet channel 18 and the oil outlet channel 19, a shaft plug 23 is movably arranged in the oil inlet and outlet cavity 22, one end of the shaft plug 23 is connected with a power source for driving the shaft plug to move, the front end of the pump body 4 is connected with an oil cylinder piston assembly 25 for driving a working component 26 to move, the front end of the oil cylinder piston assembly 25 is provided with a working component 26, an oil bag 12 is arranged at the rear end of the pump body 4, and the oil bag 12 is communicated with the oil inlet channel 18.

Referring to fig. 7 in detail, the working principle of the pump body 4 is further described, the power source drives the shaft plug 23 to reciprocate linearly in the oil inlet and outlet cavity 22, when the shaft plug 23 moves upward, the oil outlet check valve 21 is closed, negative pressure is generated in the oil inlet and outlet cavity 22, at this time, the oil pushes the oil inlet check valve 20 to be conducted and enter the oil inlet and outlet cavity 22, then the shaft plug 23 moves downward, the oil inlet check valve 20 is closed, at this time, the oil in the oil inlet and outlet cavity 22 is squeezed by the shaft plug 23, high pressure is generated in the oil inlet and outlet cavity 22, at this time, the oil pushes the oil outlet check valve 21 to be conducted and enter the oil outlet channel 19, and finally, the cylinder piston assembly 25 drives the working component 26 to operate.

With reference to fig. 5 and fig. 6, the specific structure of the oil cylinder piston assembly 25 is further described next, the oil cylinder piston assembly 25 includes an oil cylinder cover 27 connected to the pump body 4, a pressure relief passage 5 is provided in the oil cylinder cover 27, one end of the oil cylinder cover 27 is connected to an oil cylinder body 28, a hydraulic cavity 29 is formed in the oil cylinder body 28, a piston 30 is movably provided in the hydraulic cavity 29, a hydraulic passage 31 communicated with the oil outlet passage 19 is provided in the oil cylinder cover 27, one end of the hydraulic passage 31 is communicated with the pressure relief passage 5, and one end of the hydraulic passage 31 is connected to the hydraulic cavity 29.

The hydraulic oil enters the oil outlet channel 19, and after entering the hydraulic cavity 29 through the hydraulic channel 31, the hydraulic oil pushes the piston 30 to move, so that the working part 26 is driven to move, and the crimping work is realized.

Specifically referring to fig. 6, a second spring 32 is abutted between one end of the piston 30 and the end surface of the oil cylinder 28, the second spring 32 can achieve the automatic return function of the piston 30, the working component 26 includes a lower die holder piston rod 34 and a tong head 35, the piston 30 is connected with the tong head 35 through a third fastener 33, the lower die holder piston rod 34 is installed on the periphery of the oil cylinder 28, and a processing position 36 is formed between the tong head 35 and the lower die holder piston rod 34.

Specifically, referring to fig. 3, the guide key 37 is installed on the clamp head 35, and the lower end surface of the lower die holder piston rod 34 is provided with a guide groove 38 for the guide key 37 to slide, so that the horizontal line position of the lower die holder piston rod 34 can be limited, the lower die holder piston rod can keep moving linearly, and the position deviation of the lower die holder piston rod 34 in the crimping process is prevented.

Referring specifically to fig. 7, the specific structure of the power source employed in the present solution will be further described, the power source comprises a motor 39, the output end of the motor 39 is connected with a speed reducer 40 which can improve the output torque, the output end of the speed reducer 40 is provided with a transmission shaft 41, the periphery of the transmission shaft 41 is provided with an eccentric block 42, the upper end of the shaft plug 23 extends out of the pump body 4 and is formed with a driving part 43, the eccentric block 42 is positioned on the upper end surface of the driving part 43, a spring III 44 is abutted between the driving part 43 and the pump body 4, during the operation of the motor 39, the motor 39 drives the transmission shaft 41 to rotate and simultaneously drives the eccentric block 42 to rotate, when the eccentric mass 42 is located at the lower position, the eccentric mass 42 pushes the shaft plug 23 to move downward, and when the eccentric mass 42 is located at the upper position, the shaft plug 23 is pushed to move upwards by the elastic force of the spring three 44, so that the reciprocating movement of the shaft plug 23 is realized.

Referring to fig. 7 specifically, a rotating bearing 45 is arranged between each of two ends of the transmission shaft 41 and the machine body 1, the rotating bearing 45 is used for maintaining the stability of the transmission shaft 41 during rotation, and a rolling bearing 46 is sleeved on the periphery of the eccentric block 42, so that the friction force is smaller, and the service life is prolonged; specifically, referring to fig. 8, an overflow channel 47 is further formed in the cylinder head 27, one end of the overflow channel 47 is connected with an overflow cavity 48, the other end of the overflow channel 47 is connected with the hydraulic cavity 29, a safety valve assembly 49 capable of adjusting the pressure is arranged in the overflow cavity 48, an overflow hole 50 is formed in the overflow cavity 48, and the overflow hole 50 is communicated with the oil bag 12, so that when the pressure in the hydraulic cavity 29 is too high, oil can push the steel ball 21 through the overflow channel 47, the safety valve assembly 49 is opened, then the oil enters the overflow cavity 48, and flows back to the oil bag 12 from the overflow hole 50, and the force applied by the spring four 52 can be adjusted by rotating the adjusting nut 53, so that the maximum pressure applied to the steel ball 21 is changed.

The working principle is as follows:

when the crimping work is needed, the starting switch 3 is pressed, then the motor 3 runs to drive the transmission shaft 41 to rotate, the transmission shaft 41 can drive the shaft plug 23 to do reciprocating linear motion in the pump body 4 through the eccentric block 42 in the rotating process, oil in the oil bag 12 can be sucked into the oil inlet and outlet cavity 12 and is pressed out to the oil outlet channel 19, and the piston 30 is pushed to drive the working part 26 to move after the oil sequentially enters the hydraulic cavity 29 through the oil outlet channel 19 and the hydraulic channel 31, so that the crimping work is realized.

When the work that resets is carried out to needs, after rotating pressure release pole 7, will promote pressure release piston 9 and move down, and the lower extreme of pressure release piston 9 backs up pressure release check valve 8 and makes hydraulic pressure chamber 29, hydraulic pressure passageway 31, pressure release passageway 5 switches on with pressure release chamber 54, and the effect through two springs 32, can make piston 30 reset, consequently fluid in the hydraulic pressure chamber 29 will get into in pressure release chamber 54, pressure release hole 11 has been seted up on pressure release chamber 54, pressure release hole 11 is connected with oil bag 12, fluid backward flow after the pressure release is to the oil bag 12 in, realize the pressure release work.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a crimping tool of removable pump body, its characterized in that includes organism (1), is provided with detachable pump body (4) in organism (1), and the front end of pump body (4) is connected with hydro-cylinder piston assembly (25), and the front end of hydro-cylinder piston assembly (25) is provided with work piece (26), the rear end of pump body (4) is provided with oil bag (12), hydro-cylinder piston assembly (25) include can dismantle the hydro-cylinder lid (27) of being connected with organism (1), and detachable pump body (4) are installed to the terminal surface of hydro-cylinder lid (27).

2. The replaceable pump body crimping tool of claim 1, wherein: the pump body (4) is provided with a through hole (55), the oil cylinder cover (27) is provided with a connecting hole (56), and the second fastening piece (57) penetrates through the through hole (55) and the connecting hole (56) to fixedly connect the pump body (4) and the oil cylinder cover (27).

3. The replaceable pump body crimping tool of claim 2, wherein: the oil cylinder cover (27) is provided with a first mounting groove (58) in a molding mode, and a first sealing ring (59) is arranged in the first mounting groove (58).

4. The replaceable pump body crimping tool of claim 2, wherein: the oil cylinder cover (27) is provided with a plurality of first fastening holes (60), the engine body (1) is provided with a second fastening holes (61) with the same number, and the first fastening pieces (62) penetrate through the first fastening holes (60) and the second fastening holes (61) to enable the oil cylinder cover (27) to be fixedly connected with the engine body (1).

5. The replaceable pump body crimping tool of claim 4, wherein: one end of the machine body (1) is provided with a connecting end face (63), a second mounting groove (64) is formed in the connecting end face (63), and a second sealing ring (65) is arranged in the second mounting groove (64).

6. The replaceable pump body crimping tool of claim 1, wherein: the machine body (1) is provided with a handle (2), the handle (2) is provided with a starting switch (3), the pump body (4) is internally provided with a pressure relief channel (5), the pressure relief channel (5) is internally provided with a pressure relief piston (9) for controlling the on-off of liquid, the top of the pressure relief piston (9) is provided with a pressure relief rod (7) for controlling the movement of the pressure relief piston, the pressure relief rod (7) is positioned at one side of the handle (2), one end of the pressure relief channel (5) is communicated with an oil outlet channel (19), the pressure relief channel (5) is internally provided with a pressure relief check valve (8), the upper end of the pressure relief check valve (8) is provided with the pressure relief piston (9) for controlling the opening and closing of the pressure relief check valve (8), the lower end of the pressure relief piston (9) is abutted to a first spring (10), the upper end of the pressure relief piston (9) is provided with the pressure relief rod (7), and the other end of the pressure relief channel (5) is provided with a pressure relief hole (11), the pressure relief hole (11) is connected with the oil bag (12).

7. The replaceable pump body crimping tool of claim 6, wherein: the periphery cover of pressure release piston (9) is equipped with pressure release rod cover (13), and the shaping has pressure release chamber (54) in pressure release rod cover (13), has seted up pressure release hole (11) on pressure release chamber (54), pressure release check valve (8) are including pressure release steel ball (8a) and pressure release spring (8b), and pressure release steel ball (8a) butt is used for blockking up pressure release chamber (54) between pressure release spring (8b) and pressure release rod cover (13), and the lower extreme of pressure release piston (9) can stretch out pressure release rod cover (13) and be used for promoting pressure release steel ball (8 a).

8. The replaceable pump body crimping tool of claim 7, wherein: the upper end of the pressure relief rod sleeve (13) extends out of the machine body (1) and is provided with a hinged portion (16) in a forming mode, the pressure relief rod (7) is hinged in the hinged portion (16), the pressure relief rod (7) is located on the upper end face of the pressure relief piston (9), the pressure relief rod (7) is L-shaped, a limiting shaft (17) used for limiting the rotation of the pressure relief rod (7) is arranged in the hinged portion (16), and the pressure relief rod (7) is rotated to enable the pressure relief piston (9) to move.

9. The replaceable pump body crimping tool of claim 1, wherein: an oil inlet channel (18) and an oil outlet channel (19) are formed in the pump body (4), an oil inlet check valve (20) is arranged at one end of the oil inlet channel (18), an oil outlet check valve (21) is arranged at one end of the oil outlet channel (19), an oil inlet and outlet cavity (22) is formed between the oil inlet channel (18) and the oil outlet channel (19), a shaft plug (23) is movably arranged in the oil inlet and outlet cavity (22), and one end of the shaft plug (23) is connected with a power source for driving the shaft plug to move.

10. The replaceable pump body crimping tool of claim 9, wherein: a pressure relief channel (5) is formed in the oil cylinder cover (27), one end of the oil cylinder cover (27) is connected with an oil cylinder body (28), a hydraulic cavity (29) is formed in the oil cylinder body (28), a piston (30) is movably arranged in the hydraulic cavity (29), a hydraulic channel (31) communicated with the oil outlet channel (19) is formed in the oil cylinder cover (27), one end of the hydraulic channel (31) is communicated with the pressure relief channel (5), and one end of the hydraulic channel (31) is connected with the hydraulic cavity (29); a second spring (32) is connected between one end of the piston (30) and the end face of the oil cylinder body (28) in a butting mode, the piston (30) is connected with a working part (26) through a third fastener (33), the working part (26) comprises a lower die base piston rod (34), a tong head (35) is installed on the periphery of the oil cylinder body (28), and a machining station (36) is formed between the tong head (35) and the lower die base piston rod (34); a guide key (37) is arranged on the tong head (35), and a guide groove (38) for the guide key (37) to slide is formed in the lower end surface of the lower die holder piston rod (34); the power source comprises a motor (39), the output end of the motor (39) is connected with a speed reducer (40), the output end of the speed reducer (40) is provided with a transmission shaft (41), an eccentric block (42) is arranged on the periphery of the transmission shaft (41), the upper end of a shaft plug (23) extends out of the pump body (4) and is formed with a driving part (43), the eccentric block (42) is located on the upper end face of the driving part (43), a spring III (44) is abutted between the driving part (43) and the pump body (4), and the transmission shaft (41) drives the eccentric block (42) to rotate so as to drive the shaft plug (23) to reciprocate; a rotating bearing (45) is arranged between the two ends of the transmission shaft (41) and the machine body (1), and a rolling bearing (46) is sleeved on the periphery of the eccentric block (42); an overflow channel (47) is further formed in the oil cylinder cover (27), one end of the overflow channel (47) is connected with an overflow cavity (48), the other end of the overflow channel (47) is connected with a hydraulic cavity (29), a safety valve assembly (49) capable of adjusting pressure is arranged in the overflow cavity (48), an overflow hole (50) is formed in the overflow cavity (48), and the overflow hole (50) is communicated with the oil bag (12).

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